C51 COMPILER V8.12   KEYBOARD                                                              11/13/2008 16:49:26 PAGE 1   


C51 COMPILER V8.12, COMPILATION OF MODULE KEYBOARD
OBJECT MODULE PLACED IN keyboard.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE keyboard.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <at89x52.H>
   2          #include <intrins.h>
   3          #include "keyboard.h"
   4          #define key_port P3
   5          unsigned char code keynum[]={0x01,0X7E,0X7D,0X7B,0X77,0XBE,0XBD,0XBB,0XB7,0XDE,0xDD,0XDB,0XD7,0XEE,0XED,0X
             -EB,0XE7};  //鍵盤對(duì)應(yīng) 
   6           void delay(unsigned int k)  
   7          {                               
   8   1      unsigned int i,j;               
   9   1      for(i=0;i<k;i++){           
  10   2      for(j=0;j<121;j++)          
  11   2      {;}}                            
  12   1      }
  13          unsigned char scan()
  14          {
  15   1       unsigned char temp=0xff,i;
  16   1       key_port=0xf0;
  17   1       if(key_port!=0xf0)
  18   1        {
  19   2         delay(10);
  20   2         if(key_port!=0xf0)
  21   2         {
  22   3          temp=key_port;
  23   3          key_port=0x0f;
  24   3          temp=(temp&0xf0)|(key_port&0x0f);
  25   3          while(key_port!=0x0f);
  26   3          for(i=1;i<17;i++)
  27   3           {
  28   4            if(keynum[i]==temp)
  29   4            break;
  30   4           }
  31   3          }
  32   2        }
  33   1        else
  34   1        {return -1;}
  35   1        return i;
  36   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    103    ----
   CONSTANT SIZE    =     17    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)